Group 1: Claim, The megalodon was the largest shark in the world., The megalodon was at the top of the ocean food chain for millions of years., The megalodon was a dominant apex predator., Group 2: Evidence, Scientists have discovered thousands of large megalodon tooth fossils., The megalodon was over 50 feet long., Scientists discovered megalodon teeth marks on whale bones., The size of a megalodon tooth could reach up to 7 inches., Group 3: Reasoning, Because of its powerful bite, it could hunt prey that other fish could not., Since it was 3 times larger than a Great White, it dominated the ocean., The teeth reveal information about the diet because of where the marks were found..

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